Conveyer mechanism



Sept 4, 1945.

R. M. JACOBSON CONVEYER MECHANISM Filed July 5, 1941 IITTOIW/EX'Patented Sept. 4, 1945 111mm) I 1 naiphivr. Jacobson, Mahayana; 1

This invention relates to a for-treating plates or blades. Whilethe-invention has various applications and'could be used totreatvarious. kinds of plates; blades, orother objects,, in the embodiment ofthe invention illustrated, it is designed for treating or hardening theblades in grinding or pulverizing mills; These blades are plate-like andof -genera1 rectangular form, and it is desired to hardenthe endsthereofwhich are the operative portions. H

It is an object of the inventi to provide a simple, accurate andenicient machine for treat ingor hardening said blades, 1

It is a further object of the invention to provide. amachine havingoneormore rows of-burnerstogether with means for carrying the plates,. orblades past said burners to heat the same together with a tank ofsuitable liquid into which the. heated plates or blades are; discharged.g

It is another object of the invention to provide a machine such as setforth in the preceding para graph together with means for giving theblades a quick discharge movement or impulse-into ,th tankof-liquid.

Itis more specifically an object of the invention. to provide a plate orblade hardening machine comprising spacedrrowsof burners; an endlessconveyer having a run passing; between said rows, means for varying thespeed ofv travel of said conveyer to regulate the heating of saidblades, said. conveyer preferably having a long slack portion below theburners to enable the same, to cool before again passing between saidrows of burners. These and other objects and advantages of the inventionwill be fully setforthin thefollowing description made in connectionwith the accompanying drawing in which like reference vcharacters referto similar parts throughout the sev-v eral views and in whichp Fig. l isa plan view of the ma ine shown somewhatdiagrammatically; 1 "Fig. -2 isa view in side elevation of the machine; g p q I Fig. 3 is averticals'ection taken substantially on line 33 of Fig. 2 as indicatedby the arrows; Fig. 4is a vertical section taken substantially on line 44 of Fig. 2 as indicated by the arrowssome parts being omitted; Fig. 5is a top plan viewof a link f thevc'onveyer used;. hand u v v- 1, Fig. 6is a view in side elevationgof said link, liigs 5 and 6 being shown-onan enlarged-scale; "Referring to the drawing, a machine is shownhaving aframe I0..-- 7 a While this'could beof-lvarlous forms, in the embodimentof inventioniilluss i i omp s saaa apltsman sea:

bers [0a, lower horizontal spaced members lib, verticalb'aligned withmembers 10a, supporting;

Members H are securedtothemembers Ma and have supp rted thereon spacedbars it, which. bars, have mounted.v therein; a plurality of*rectilinearly arranged burners ll; Burners ll thus, arranged in rowsparallel to theedges of members 12 Burners}; have cylindricalpery-j'forated top portions 13a (the perforations not being shown) and comprisetubes l3b whichex tend downwardly to pipes .lLWhichlSllpplythtburnerswith gas or a combustible mixtures The bars 12 have connectedthereto-screws l5 provided;

withoperating hand wheels liattheir outer ends.

Screws {5 are threaded intoupstanding flanges I la on the members H.-These flanges form nutssothat-the members .12 can thus be movedwithburners lfl to be closer together or farther apart:

by rotation oi screws 15. The connectionsior' sup lyinsie sto the pipes-I 4 will be suitablyfcons: structed to permit said movement. Mounted be;tween members lOa and adjacent the endslof;

members [2 are sprockets H and [8 -Sprocket" I! is mountedona shaft I9journaled in bearings indicated at. -carriedon members 1a.. "Sprocket -1I8 is carried on a shaft 2| journaledtintsimiiar' bearings 22; alsocarried on members lea; .An endless conveyer 2-4 formed ofconnected-links 24a is provided and arranged to travelover the sprocketsI 1 and It. The links 24a have fiat lug 2 4b projecting at either sidecarrying-upstanding pins-26. .The pins 25 are so spaced on adjacentlinksthat one of the blades -B;to betreated fits, The'blades; B.willthus be carried along by the top run of. conveyer 24 disposedat-right angles, to the path. The shaft 21 has.

between said pins as shown in Fig. .1.

of movement of saidconveyer. secured theretoa sprocket over which runsa, chain ll'also running over a sprocket 32 secured to ashaft'carrier ina speed reducing device.

Another :sprocket 35 is secured to shaft '34 over which- :runs, a chain36 :-1 also 7. running overa sprocketzjfl A vSprocket 31 is secured; toa shaft" 33a formmgpart of a speed-changingdevice 3|;

' 1 ta dmecdachanging deviceis otwellknowncomimercial form andspecifically forms no part of the present invention. It may be statedthat it Shaft 38d has secured thereto a pulprojecting outwardly from andsupported on one of the members 10b. With. the describedcon- 5 nectionsit will be seen that motor 43 will transmit power to the speed-changingdevice 38.' Shaft 380 can thus be driven at difierent speedsand thiswill through chain 36 and sprockets 31 and device 38 will be regulatedto give the desired speed to the conveyer 24. The burners I3 will belighted and the conveyer will carry said blades B past burners [3 sothat their ends pass closely adjacent said burners. The ends of theblades will thus 'be brought to the desired temperature. The pin II asstated, is held against the periphery of ratchet wheel 61. ,The teeth ofthis wheel act as cams and as said wheel rotates pin 1| moves over theouter edge of each tooth and then snaps suddenly into the space betweenthe teeth due to spring 10. Just before the 'pin ll drops into saidspace the arm portion 68a; is in position to engage the blade B which isjust about to drop from conveyer 24. The pin ll snaps into the space be-7 tween the teeth and arm portion 68a is given a 35, drive shaft 34.Sprocket 32 will be driven at a fixed reduction in speed and this will,through chain 3| drive sprocket 38. Sprocket 38 will drive shaft 2| sothat conveyer'24 will be driven and its upperrun will move in thedirection of the arrow in Fig. 2. 'Some'cooling means for the blades isprovided-and while this could take various forms,

in" the embodiment of the invention illustrated, a tank 48 is providedat one end of the frame I8 and this will contain asuitable liquid intowhich the'blades Bare discharged from conveyer 24. 1 A shaft 48 isjournaled inbrackets 58 supported atj one endof tank 48 and asprocket'il is secured to shaft 49. Ashaft 52 is journaledin a bracket53 secured to one side of tank and-hasse'cured thereto a sprocket 54. Achain 55 runs over sprocketsil and 54. Shaft 52 also has securedtheretoa sprocket 5 6 and this is driven by a chain 62 is-carriedonshaft 49 and-a conveyer belt 63 travels over the rollers Hand 62.Another roller 64is revolubly mounted above roller. 62 and in positionsubstantially engaging conveyer belt"63.-'

Roller 64- is preferably of yielding material,

' :Shaft 2| has secured to one end thereofa ratchet wheel 61. An arm 68has a substantially quick movement toward blade B and said blade 'isgiven a quick discharge movement from the conveyer into the liquid intank 48. The blades arethus quickly discharged as they reach the end ofthe conveyer so thatthey will not lag in the discharge movement and*cool'to an undesirable extent. The blades B are thus successivelycarried past the burners l3 and the conveyer 24 travels over-thesprockets l1 and 18; The conveyer 24-is provided with a long slackportion below-and between sprockets I! and I8. This long slack portionis provided so that the conveyer-will have ample oportunity to coolbefore again passing between the burners l3. It will be noted thatsaidportion is outside the hood". The blades dropped into the tank 48 droponto the belt- 63 being guided thereon by the deflector 48a and saidblades are carried upwardly and discharged. Roller 64 acts to dry theblades asthey' pass beneath it. 'As stated, the members l2 can be movedtoward and'from each other and this will vary the position of theburners l3. The burners can thus be accurate y positioned relative toconveyer 24 and to the blades'Bto be treated so thatthe desired portionsof said blades will be I heated.

V shaped portion as seen in Fig. '2 and'is pivotally mounted on a pivotstud 69 carried in one of the members Illa. Arm .68 has a portion 68aextending'substantially horizontally to a point. adj acent conveyer24-at' the-rear side of sprocket 18,

the end of this 'portionbeing disposed in positionto engage one of theblades B as it is about to be discharged I from conveyer 24. A tensilecoiled spring 10 has one end secured to the lower end of arm 88 and hasits other end secured to-one "ofthe -posts 100. 1 Arm GB-ca'rries a pin"1| 5 which engages .the'periphery of ratchet'wheel- Grandsaidpin-isiheld against said periphery by spring -1'A' hood-l4v is supportedon members I (la as indil cated inLFigr2 andencloses the members [2 andburners. l3 aswell as most ofthe upper-run ofconveyer 24. Said hoodwillbe provided 'with' a suitable istack (not shown) for carrying oil"theproducts of combustion from burners l3. s

In operation theblades B to be treated will be Moto rfii will be drivenand thegspeed-fchanging From the above description it'willbe seen that Ihave provided a very compact and efi'icientma:

chine which very'accurately' treats the blades to give the desireddegree of hardness. can, as; stated, be'regulated by changing the speedof conveyer 24 and by properly positioning the members l2. Someregulation can of course, be had by regulating the gas flame.

found to be very successful and efiicient and-is beingcomm'erciallymade, 7 g V i It will, of course, be understood that various changes maybe made in the form, details, ar-

rangement' and proportions of the parts, without departing from thescope of applicants inven-' tion, which-generally stated; consists in adevice capable of carrying out the objects above set' V forth, in theparts and combinations of parts disclosedand defined inthe appendedclaims. I What is claimed is: 7

' 1.'; A conveyerdevice for use in heat treating of articles having incombination, a conveyeiymeans on said conveyer for supporting andprogressingplates for heat treatment, said conveyer having a' dischargeend, a pivoted'arm having oneenddisposed adjacent said end of saidconveyer and in position-to engage a plate about to bedi scha r'ged,from-said conveyer, a rotating toothed ratchet wheel, said armcarryingmeans engaging the. periphery of said wheel, and resilient means mm; ing'said' last mentioned means against said ta The heating The ma 1 chineis simple'in construction and does its work riphery whereby said arm ismoved by said wheel to place said resilient means under tension 50 thatsaid second mentioned means will snap into the spaces between the teethof said ratchet wheel to cause said end of said arm to move in thegeneral direction of the movement of said conveyer and plates to give aqiuck discharge impulse to said plate in said direction to discharge thesame from said conveyer.

2. A conveyer device for use in heat treating articles having incombination, a conveyer, means on said conveyer for supporting plates toprogress them for heat treatment, said conveyer having a discharge end,a swinging arm adjacent said end disposed so as to engage each of saidplates as it reaches said end, a resilient means connected to said armtending to move it in one direction and a rotatable cam means for movingsaid am in

